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-rw-r--r--gcc/cppinit.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/cppinit.c b/gcc/cppinit.c
index 74679c0..4066ee3 100644
--- a/gcc/cppinit.c
+++ b/gcc/cppinit.c
@@ -149,6 +149,7 @@ cpp_create_reader (lang, table)
CPP_OPTION (pfile, show_column) = 1;
CPP_OPTION (pfile, tabstop) = 8;
CPP_OPTION (pfile, operator_names) = 1;
+ CPP_OPTION (pfile, warn_trigraphs) = 2;
CPP_OPTION (pfile, warn_endif_labels) = 1;
CPP_OPTION (pfile, warn_deprecated) = 1;
CPP_OPTION (pfile, warn_long_long) = !CPP_OPTION (pfile, c99);
@@ -554,6 +555,9 @@ post_options (pfile)
CPP_OPTION (pfile, traditional) = 0;
}
+ if (CPP_OPTION (pfile, warn_trigraphs) == 2)
+ CPP_OPTION (pfile, warn_trigraphs) = !CPP_OPTION (pfile, trigraphs);
+
if (CPP_OPTION (pfile, traditional))
{
/* Traditional CPP does not accurately track column information. */